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  • sharpening device

    I saw this machine at a trade show not long ago. The man demonstrating it would blue the edge or cutting edge of a drill bit or end mill and then hold it under the rotating wheel and sharpen the tool. The rotating wheel is diamond inpregnated and has holes in it so you can see through to the edge that you are sharpening. It was interesting to see the blue taken off. I tried it myself and thought it would be a good addition to my shop.

    I can sharpen my drill bits by hand on a pedestal grinder but not as good as I would like. I was curious if any of you have seen or used something like this.

    Location: The Black Forest in Germany

    How to become a millionaire: Start out with 10 million and take up machining as a hobby!

  • #2
    Nifty, But should'nt that be a CBN wheel for HSS use?
    'Silly rabbit, Diamonds are for carbide.'
    Play Brutal Nature, Black Moons free to play highly realistic voxel sandbox game.

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    • #3
      It costs a thousand bucks (on sale for $899), which puts it out of my league.....
      ----------
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      • #4
        Grinding Wheel

        Diamond works just fine for HSS too.
        Kansas City area

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        • #5
          Watched one of those being used by a wood carver quite a few years
          ago. Workrd good for chisels and carving tools but for lathe bits etc
          I think the Glendo machine is FAR better bet.
          ...Lew...

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          • #6
            Originally posted by SGW
            It costs a thousand bucks (on sale for $899), which puts it out of my league.....
            Always wondered where they come up with prices, flip a coin?
            guess? maybe a dart board?.

            No dang wonder it's on sale for $900, no, I'm sorry, $899, still over priced by a factor of two or three. These places need to think on perhaps making a nickel three times is better then making a dime once.

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            • #7
              So company at the local Wood Show was demonstrating a similar, but MUCH more crude arrangement. It was a clamp that held an electric hand drill vertically near the edge of the bench. A diamond wheel, with holes, mounted on a mandrel, was chucked in the drill. The drill was sharpened on the underside of the wheel while control and progress was watched through the holes. The guy demonstrating it was VERY good, but you can bet that it takes a lot of practice to really get the hang of it. This "kit" sold for about Cdn $90.00, and no, they would NOT sell the wheel separately. Duffy
              Duffy, Gatineau, Quebec

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              • #8
                A motor, standoff. eyeglass, and holy wheel. Priceless! Someone will copy this in their HS. And not for $900.00! Now, just where do ya find that wheel?
                Krutch


                Mentally confused and prone to wandering!

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                • #9
                  They will sell just the diamond disk. A small one for a angle grinder or drill is 50 Euro's. The larger one is 199 Euro's. The light/magnifier is 125 Euro's.
                  Location: The Black Forest in Germany

                  How to become a millionaire: Start out with 10 million and take up machining as a hobby!

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                  • #10
                    at $900 is certainly isn't tempting me the slightest

                    and if that is an AC motor what is going to absorb the woo/flutter

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                    • #11
                      The bluing that you see is an oxide layer. Removing the blue colour with a grinder is easy, but the real question is what has happened to the underlying temper of the material? That can be damaged but in the absence of oxygen won't go blue.

                      Michael

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                      • #12
                        They are selling the disk alone here in Germany since years (Kaindl is a German company).
                        This motor with magnifier seems to be quite new, haven't seen it yet.

                        I don't have one. I know some who have such a disk and they are quite happy it seems. At least, I haven't read some negative feedback.

                        I won't buy one, somehow I don't see the big advantage. But maybe I'm just too old to change habbits.

                        Here are the prices and a video.


                        Nick

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                        • #13
                          The "bluing" is drawn on with a felt tip pen to act as a guide as you grind. I watched the demonstrator do it-covered the bevel angle of a dull chisel, then proceded to adjust his holding position until the blue ground away.
                          Duffy, Gatineau, Quebec

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                          • #14
                            So what is it they are doing? Do they strobe a light on the work to be sharpened that coincides with the speed of the wheel hence the speed of the viewing holes?
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                            • #15
                              Originally posted by Your Old Dog
                              So what is it they are doing? Do they strobe a light on the work to be sharpened that coincides with the speed of the wheel hence the speed of the viewing holes?
                              A flourescent tube around the viewing lens would strobe the wheel at 50 or 60Hz.

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